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  1. Scott06

    2nd wiped Camshaft OMC 460

    yes Its possible. When you change out to positive seals you need to machine the valve guides down so the seal will fit. If you just put a seal on top of the cast in boss i would suspect you have seal to retainer interference , could be hitting the inside if the spring as you are likely using a...
  2. Scott06

    1992 Bayliner Cuddy 3.0 Mercruiser

    Dont take any bs for buying a bayliner, they are a cheap way to get on the water. Older ones didn’t hold up too well hence the chop busting. They have the same mercrusier engine as many other boats so mechanically the same. on a boat of this age you need to be concerned about wood rot in...
  3. Scott06

    Uhhhh

    Check spark strength with something like this...
  4. Scott06

    Is my 77 Inline 6, 250 CID, 165 HP a GMC or a GM Chevy

    that was the point trying to clarify info for the OP not confuse him ...he has a straight 6 not a V6
  5. Scott06

    2nd wiped Camshaft OMC 460

    Did u machine the guides on the heads for the positive seals? Sounds like you have some mix and match parts tough to tell what was done previously. if i recall on ford 429 and 460 heads the pushrod length is changed to account for any machien work like milling the heads etc? Might want to look...
  6. Scott06

    Is my 77 Inline 6, 250 CID, 165 HP a GMC or a GM Chevy

    And starting to stink...
  7. Scott06

    Mercruiser 350 and Alpha One Gen 1 - maintenance recommendations?

    Thats a good list but i would add this - Pressure test the drive. This will tell if any seals are leaking id do the plugs, check the wires, also check cap and rotor. carb rebuild id look at the fuel for any contamination if clean see how it runs, rebuild if you have stumble or other running...
  8. Scott06

    Thunderbolt IV Ignition Module

    module is in the distributor
  9. Scott06

    2nd wiped Camshaft OMC 460

    Check for adequate oil supply, use priming tool to run oil pump with valve covers and intake off. You say the lift is more - did you check for valve seal to retainer clearance? When you replaced the seals were the valve guides remachined for the seal used if a more modern positive seal was...
  10. Scott06

    1996 4.3 Mercruiser water in my oil? Hoping not!

    Looks good when is the engine coming ?
  11. Scott06

    Trouble identifying piston - OMC 5.7

    The .030 means the block was bored .030 inch overbore. Thats the common US engine rebuild over bore. look for the pistons at a US supplier like Summit Racing . What happened to the one piston? it is unusual to replace just one.
  12. Scott06

    OMC to Mercruiser!

    The only thing youd keep that isnt mercruiser specific is the longblock and intake manifold. All the other components are specific to the obsolete omc stringer set up you want to get rid of.
  13. Scott06

    OMC to Mercruiser!

    You can slap a 3.0 drive on a 5.7 but tge drive ratio is way different. The flywheel cover is tge same 3.0, 4.3, and 5.7 . issue bondo was pointing out if you get a 3.0 donor and try to piece a 5.7 in front of it you will be missing a lot of parts like exhust manifolds/wye pipe/elbows etc...
  14. Scott06

    OMC to Mercruiser!

    The stringer uses a larger transom hole than the cobra and alpha drives, you will have to fill that in so you have something to mount it to.
  15. Scott06

    Correct carb?

    Here is a link to the tuning guide. https://edelbrock-instructions-v1.s3.amazonaws.com/edelbrock/carb-tuning-guide.pdf On 5.7 you’d probably be best to go back to the factory calibration as a starting point. worked pretty good when i swaped in 5.0 in my boat. Really just needed a bigger...
  16. Scott06

    Bravo 3 Drive Showers

    Necessary no, especially for use you outline. the only time i have noticed needed one is when towing skiiers for like an hour straight, low pitch prop, glass smooth day so we had nice long runs. I was surprised how hot the upper was when climbing back in the boat. This biat was 35 yrs old when i...
  17. Scott06

    Alpha 1 clattering noise behind prop???

    Yeah it is like 90 degrees of rotation. its also easy to bend the bronze shift fork if you jam the drive back in when they are not aligned and in fwd... unfortunately speaking from experince , and yes its about a $100 part...
  18. Scott06

    Alpha 1 gen 2 oil in bellows

    Yeah you don't need the grease seal, especially with a permalube bearing. The one reason many applications went to lubed for life is that folks tend to over grease the bearing. When grease gets built up on the bearing too much from repeated greasings, the bearing cant give off heat and cangettoo...
  19. Scott06

    Thunderbolt IV spark loss

    you may want to look on ebay for used modules. I bought two (one for a spare) for like $200 each the only other thing i would think to verify is under load do you still have 12 v at the coil ? Do you have corrosion in the harness or at the cannon plug that your losing voltage under load like...
  20. Scott06

    2011 New 3.0 MFI with no spark mystery

    I like the comment on disconnecting the tach, look at the shift interrupt as well (Im assuming alpha drives ?) . Also maybe take the distributor cap off and crank it to verify the distributor does spin on the off chance the cam or geardrive is messed up.
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